2 years ago

He ride a bike for 15 miles oer hour how many miles did he ride

Mathematics

1 answer:

Klio2033 [76]2 years ago

7 0

Yes it’s 15, Thats cool man

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Y=4x and 3x+y=-21. Substitute

gizmo_the_mogwai [7]

value of x= -3 and value of y = -12

Solution set is (-3,-12)

Step-by-step explanation:

We need to solve the system of equations using substitution

The system of equations are:

$y=4x\\3x+y=-21$

Solving:

Let

$y=4x\,\,eq(1)\\3x+y=-21\,\,eq(2)$

Solving:

Putting value of y from equation 1 into equation 2

$3x+y=-21\\3x+4x=-21\\7x=-21\\x=-21/7\\x=-3$

So, value of x = -3

Now, putting value of x into equation 1 and find value of y

$y=4x\\y=4(-3)\\y=-12$

Value of y = -12

So, value of x= -3 and value of y = -12

Solution set is (-3,-12)

Keywords: System of equations

Learn more about system of equations at:

#learnwithBrainly

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2 years ago

Help me with 11 please I’m crying Perform indicated operations

Svetlanka [38]

$\begin{gathered} h(x)=-4x+1 \\ g(x)=2x+2 \\ h(x)\cdot g(x)=(-4x+1)\cdot(2x+2) \\ \text{ Distributing:} \\ h(x)\cdot g(x)=(-4x)\cdot2x+(-4x)\cdot2+1\cdot2x+1\cdot2 \\ h(x)\cdot g(x)=-8x^2-8x+2x+2 \\ \text{ Combining similar terms:} \\ h(x)\cdot g(x)=-8x^2-6x+2 \end{gathered}$

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7 months ago

Is (6, -4) a solution for the following system of equations?

irga5000 [103]

Answer: no

Step-by-step explanation: explained in photo